The HTC HD2 is probably one of the most enduring mobile phones out there. While it originally shipped with Windows Mobile way back in 2009, it has become one of the most hacker-friendly devices out there, and hackers have managed to port virtually everything to the device - various versions of Android, MeeGo, Ubuntu, and Windows Phone have found their way to the HD2. Russian hacker Cotulla, responsible for many of these ports, has just announced the next big port: Windows RT is now running on the HD2.

I agree with you that is really isn't a port, but a Surface tablet from what I can read is using a Tegra 3 (arm v9) processor and the HD2 is using a Qualcomm Snapdragon S1 (arm v8). The device drivers between the two are immensely different.

What I did notice is that the screen is not oriented properly, probably because there is no drivers for the accelerometer, we don't know if there is any hardware acceleration for the video or network devices working. Even if he has managed to get this running on the hardware we don't have any clues if this is functionally useful.